Sen. Susan Collins (R., Maine) talks to reporters on her way to the Senate Chamber for a vote March 24, 2014 on Capitol Hill in Washington, D.C. (Photo by Alex Wong/Getty Images)

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Key parts of a controversial Senate report on the Central Intelligence Agency’s interrogation program are likely to be made public after two senators considered key swing votes on the issue announced their support for disclosure.

Wednesday’s announcement by Maine Sens. Susan Collins, a Republican, and Angus King, an independent, likely clinched support for declassifying portions of the highly critical report. The Senate Intelligence Committee is due to vote on the matter in a closed-door session Thursday.

The report concludes the CIA misled the Justice Department, Congress, and the public on the effectiveness of harsh interrogation practices, officials say. Its disclosure will fuel a debate over the CIA’s use of brutal methods such as waterboarding in a program President Barack Obama officially stopped in 2009.

“We remain strongly opposed to the use of torture, believing that it is fundamentally contrary to American values,” the two senators said Wednesday. “While we have some concerns about the process for developing the report, its findings lead us to conclude that some detainees were subjected to techniques that constituted torture.”

They added that the report also “raises serious concerns about the CIA’s management of this program.”

Ms. Collins and Mr. King said they supported declassification of the report’s executive summary along with additional comments, dissenting views and the CIA’s rebuttal, “so the American public can reach their own conclusions about the conduct of this program.”

Democrats on the committee support declassification, and Ms. Collins’s support for disclosure suggests some bipartisan agreement that the report should be made public. Mr. Obama has said he supports declassification, and the CIA has said it will review a declassification request “expeditiously.”]

A CIA spokesman said the agency hasn’t received a final copy of the report “and until we’re given the opportunity to review it, we are unable to comment on details it may contain.”

The report has triggered an unusual public feud. CIA officials think Senate staff gained unauthorized access to some secret documents. Senators believe CIA improperly snooped on committee staffers investigating the matter. Both aspects of the dispute are subjects of a Justice Department review.

Most Republicans on the committee are expected to vote against the release of the report, which they have criticized. The 6,300-page report was written by the Democratic staff on the committee. The vote Thursday is expected to back the release of about 500 pages of the report.

“Our vote to declassify this report does not signal our full endorsement of all of its conclusions or its methodology,” the Maine senators said in a joint statement. They added that the report has “intrinsic limitations” because it didn’t include direct interviews of officials involved or participation from Republican staff.

They added that it’s important that the misconduct that occurred in CIA’s interrogations never be repeated.

“Torture is wrong, and we must make sure that the misconduct and the grave errors made in the CIA’s detention and interrogation program never happen again,” they said.

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